Earlier this month, South Korea showed off its electric “Armadillo-T” car, designed to save space by contracting its body nearly in half. Also, you can park it with your smartphone. But don’t expect to be doing Fast & Furious stunts in your tiny, lightweight vehicle — the thing can’t even hit 40 miles per hour, not to mention it doesn’t pass safety standards.

Still, the car is fascinating in its design, and it’s far from the only new concept car that can say so. Here’s a look at five of the strangest and most interesting concept cars.